Yesterday was Bon Iver Day in Milwaukee and a couple of thousand folks in the city were lucky enough to celebrate with Justin Vernon himself at his band’s tour kickoff at Riverside Theater. The set included the live debut of every song from his acclaimed new (age) LP2 — save “Lisbon, OH” — and there was even a new cover debuted during the encore: Björk’s “Who Is It (Carry My Joy On The Left, Carry My Pain On The Right),” from 2004’s Medúlla. Time to update our list of Bon Iver’s Best Cover Songs. Take a listen: